﻿using System;
using System.Collections.Generic;
using System.IO;
using System.Linq;
using System.Security.Cryptography;
using System.Text;

namespace Oliving.Edge.Common.IncodeHelper
{



    /// <summary>  
    /// DES3加密解密  
    /// </summary>  
    public class Des3Utility
    {

        #region CBC模式**
        /// <summary>  
        /// DES3 CBC模式加密  
        /// </summary>  
        /// <param name="key">密钥</param>  
        /// <param name="iv">IV</param>  
        /// <param name="data">明文的byte数组</param>  
        /// <returns>密文的byte数组</returns>  
        public static byte[] Des3EncodeCBC(byte[] key, byte[] iv, byte[] data)
        {
            //复制于MSDN  
            try
            {
                // Create a MemoryStream.  
                MemoryStream mStream = new MemoryStream();
                TripleDESCryptoServiceProvider tdsp = new TripleDESCryptoServiceProvider();
                tdsp.Mode = CipherMode.CBC;             //默认值  
                tdsp.Padding = PaddingMode.PKCS7;       //默认值  
                // Create a CryptoStream using the MemoryStream  
                // and the passed key and initialization vector (IV).  
                CryptoStream cStream = new CryptoStream(mStream,
                    tdsp.CreateEncryptor(key, iv),
                    CryptoStreamMode.Write);
                // Write the byte array to the crypto stream and flush it.  
                cStream.Write(data, 0, data.Length);
                cStream.FlushFinalBlock();
                // Get an array of bytes from the  
                // MemoryStream that holds the  
                // encrypted data.  
                byte[] ret = mStream.ToArray();
                // Close the streams.  
                cStream.Close();
                mStream.Close();
                // Return the encrypted buffer.  
                return ret;
            }
            catch (CryptographicException e)
            {
                Console.WriteLine("A Cryptographic error occurred: {0}", e.Message);
                return null;
            }
        }
        /// <summary>  
        /// DES3 CBC模式解密  
        /// </summary>  
        /// <param name="key">密钥</param>  
        /// <param name="iv">IV</param>  
        /// <param name="data">密文的byte数组</param>  
        /// <returns>明文的byte数组</returns>  
        public static byte[] Des3DecodeCBC(byte[] key, byte[] iv, byte[] data)
        {
            try
            {
                // Create a new MemoryStream using the passed  
                // array of encrypted data.  
                MemoryStream msDecrypt = new MemoryStream(data);
                TripleDESCryptoServiceProvider tdsp = new TripleDESCryptoServiceProvider();
                tdsp.Mode = CipherMode.CBC;
                tdsp.Padding = PaddingMode.PKCS7;
                // Create a CryptoStream using the MemoryStream  
                // and the passed key and initialization vector (IV).  
                CryptoStream csDecrypt = new CryptoStream(msDecrypt,
                    tdsp.CreateDecryptor(key, iv),
                    CryptoStreamMode.Read);
                // Create buffer to hold the decrypted data.  
                byte[] fromEncrypt = new byte[data.Length];
                // Read the decrypted data out of the crypto stream  
                // and place it into the temporary buffer.  
                csDecrypt.Read(fromEncrypt, 0, fromEncrypt.Length);
                //Convert the buffer into a string and return it.  
                return fromEncrypt;
            }
            catch (CryptographicException e)
            {
                Console.WriteLine("A Cryptographic error occurred: {0}", e.Message);
                return null;
            }
        }
        #endregion

        #region ECB模式
        /// <summary>  
        /// DES3 ECB模式加密  
        /// </summary>  
        /// <param name="key">密钥</param>  
        /// <param name="iv">IV(当模式为ECB时，IV无用)</param>  
        /// <param name="str">明文的byte数组</param>  
        /// <returns>密文的byte数组</returns>  
        public static byte[] Des3EncodeECB(byte[] key, byte[] iv, byte[] data)
        {
            try
            {
                // Create a MemoryStream.  
                MemoryStream mStream = new MemoryStream();
                TripleDESCryptoServiceProvider tdsp = new TripleDESCryptoServiceProvider();
                tdsp.Mode = CipherMode.ECB;
                tdsp.Padding = PaddingMode.PKCS7;
                // Create a CryptoStream using the MemoryStream  
                // and the passed key and initialization vector (IV).  
                CryptoStream cStream = new CryptoStream(mStream,
                    tdsp.CreateEncryptor(key, iv),
                    CryptoStreamMode.Write);
                // Write the byte array to the crypto stream and flush it.  
                cStream.Write(data, 0, data.Length);
                cStream.FlushFinalBlock();
                // Get an array of bytes from the  
                // MemoryStream that holds the  
                // encrypted data.  
                byte[] ret = mStream.ToArray();
                // Close the streams.  
                cStream.Close();
                mStream.Close();
                // Return the encrypted buffer.  
                return ret;
            }
            catch (CryptographicException e)
            {
                Console.WriteLine("A Cryptographic error occurred: {0}", e.Message);
                return null;
            }
        }
        /// <summary>  
        /// DES3 ECB模式解密  
        /// </summary>  
        /// <param name="key">密钥</param>  
        /// <param name="iv">IV(当模式为ECB时，IV无用)</param>  
        /// <param name="str">密文的byte数组</param>  
        /// <returns>明文的byte数组</returns>  
        public static byte[] Des3DecodeECB(byte[] key, byte[] iv, byte[] data)
        {
            try
            {
                // Create a new MemoryStream using the passed  
                // array of encrypted data.  
                MemoryStream msDecrypt = new MemoryStream(data);
                TripleDESCryptoServiceProvider tdsp = new TripleDESCryptoServiceProvider();
                tdsp.Mode = CipherMode.ECB;
                tdsp.Padding = PaddingMode.PKCS7;
                // Create a CryptoStream using the MemoryStream  
                // and the passed key and initialization vector (IV).  
                CryptoStream csDecrypt = new CryptoStream(msDecrypt,
                    tdsp.CreateDecryptor(key, iv),
                    CryptoStreamMode.Read);
                // Create buffer to hold the decrypted data.  
                byte[] fromEncrypt = new byte[data.Length];
                // Read the decrypted data out of the crypto stream  
                // and place it into the temporary buffer.  
                csDecrypt.Read(fromEncrypt, 0, fromEncrypt.Length);
                //Convert the buffer into a string and return it.  
                return fromEncrypt;
            }
            catch (CryptographicException e)
            {
                Console.WriteLine("A Cryptographic error occurred: {0}", e.Message);
                return null;
            }
        }


        #endregion

        #region  ECB模式 Default
        const string keyDefault = ("YWJjZGVmZ2hpamtsbW5vcHFyc3R1dnd4");

        /// <summary>  
        /// DES3 ECB模式加密  
        /// </summary>   
        public static string Des3EncodeECBDefault(string code)
        {
            byte[] ivDefault = new byte[] { 1, 2, 3, 4, 5, 6, 7, 8 };      //当模式为ECB时，IV无用  
            System.Text.Encoding utf8 = System.Text.Encoding.UTF8;
            byte[] data = utf8.GetBytes(code);
            byte[] str1 = Des3EncodeECB(Convert.FromBase64String(keyDefault), ivDefault, data);
            return Convert.ToBase64String(str1);
        }
        /// <summary>  
        /// DES3 ECB模式解密  
        /// </summary>   
        public static string Des3DecodeECBDefault(string code)
        {
            byte[] ivDefault = new byte[] { 1, 2, 3, 4, 5, 6, 7, 8 };      //当模式为ECB时，IV无用  
            System.Text.Encoding utf8 = System.Text.Encoding.UTF8;
            byte[] data = utf8.GetBytes(code);
            byte[] str1 = Des3DecodeECB(Convert.FromBase64String(keyDefault), ivDefault, data);
            return System.Text.Encoding.UTF8.GetString(str1);
        }
        #endregion



        /// <summary>  
        /// 类测试  
        /// </summary>  
        public static void Test()
        {
            System.Text.Encoding utf8 = System.Text.Encoding.UTF8;
            //key为abcdefghijklmnopqrstuvwx的Base64编码  
            byte[] key = Convert.FromBase64String("YWJjZGVmZ2hpamtsbW5vcHFyc3R1dnd4");
            byte[] iv = new byte[] { 1, 2, 3, 4, 5, 6, 7, 8 };      //当模式为ECB时，IV无用  
            byte[] data = utf8.GetBytes("中国ABCabc123");

            #region ECB模式
            System.Console.WriteLine("ECB模式:");
            byte[] str1 = Des3Utility.Des3EncodeECB(key, iv, data);
            byte[] str2 = Des3Utility.Des3DecodeECB(key, iv, str1);
            System.Console.WriteLine(Convert.ToBase64String(str1));
            System.Console.WriteLine(System.Text.Encoding.UTF8.GetString(str2));
            System.Console.WriteLine();
            #endregion

            #region CBC模式

            System.Console.WriteLine("CBC模式:");
            byte[] str3 = Des3Utility.Des3EncodeCBC(key, iv, data);
            byte[] str4 = Des3Utility.Des3DecodeCBC(key, iv, str3);
            System.Console.WriteLine(Convert.ToBase64String(str3));
            System.Console.WriteLine(utf8.GetString(str4));
            System.Console.WriteLine();
            #endregion

        }



        #region COT_ecb

        /// <summary>
        ///  DES3 CBC模式加密  
        /// </summary>
        /// <param name="?"></param>
        /// <returns></returns>
        public static string Des3EncodeECB(string strA)
        {

            System.Text.Encoding utf8 = System.Text.Encoding.UTF8;
            //key为abcdefghijklmnopqrstuvwx的Base64编码  
            // 用 key 加密 qxt.cotlife.cn.eds3.ecb 后的
            byte[] key = Convert.FromBase64String("YWJjZGVmZ2hpamtsbW5vcHFyc3R1dnd5");
            byte[] iv = new byte[] { 1, 2, 3, 4, 5, 6, 7, 8 };      //当模式为ECB时，IV无用  
            byte[] data = utf8.GetBytes(strA);

            byte[] str1 = Des3Utility.Des3EncodeECB(key, iv, data);

            string strB = (Convert.ToBase64String(str1));

            return strB;
            //////////////////////////////////////////////////////////////////////////////////

        }

        /// <summary>  
        /// DES3 CBC模式解密  
        /// </summary>  
        /// <param name="key">密钥</param>  
        /// <param name="iv">IV</param>  
        /// <param name="data">密文的byte数组</param>  
        /// <returns>明文的byte数组</returns>  
        public static string Des3DecodeECB(string strA)
        {
            System.Text.Encoding utf8 = System.Text.Encoding.UTF8;
            //key为abcdefghijklmnopqrstuvwx的Base64编码  
            byte[] key = Convert.FromBase64String("YWJjZGVmZ2hpamtsbW5vcHFyc3R1dnd5");
            byte[] iv = new byte[] { 1, 2, 3, 4, 5, 6, 7, 8 };      //当模式为ECB时，IV无用  

            byte[] str1 = Convert.FromBase64String(strA);
            byte[] str2 = Des3Utility.Des3DecodeECB(key, iv, str1);
            string strB = (System.Text.Encoding.UTF8.GetString(str2));
            //////////////////////////////////////////////////////////////////////////////////
            return strB;
        }



        #endregion

        #region COT_CBC
        /// <summary>
        ///  DES3 CBC模式加密  
        /// </summary>
        /// <param name="?"></param>
        /// <returns></returns>
        public static string Des3EncodeCBC(string strA)
        {

            System.Text.Encoding utf8 = System.Text.Encoding.UTF8;
            //key为abcdefghijklmnopqrstuvwx的Base64编码  
            // 用 key 加密 qxt.cotlife.cn.eds3.ecb 后的
            byte[] key = Convert.FromBase64String("YWJjZGVmZ2hpamtsbW5vcHFyc3R1dnd5");
            byte[] iv = new byte[] { 1, 2, 3, 4, 5, 6, 7, 8 };      //当模式为ECB时，IV无用  
            byte[] data = utf8.GetBytes(strA);

            byte[] str1 = Des3Utility.Des3EncodeCBC(key, iv, data);

            string strB = (Convert.ToBase64String(str1));

            return strB;
            //////////////////////////////////////////////////////////////////////////////////

        }

        /// <summary>  
        /// DES3 CBC模式解密  
        /// </summary>  
        /// <param name="key">密钥</param>  
        /// <param name="iv">IV</param>  
        /// <param name="data">密文的byte数组</param>  
        /// <returns>明文的byte数组</returns>  
        public static string Des3DecodeCBC(string strA)
        {
            System.Text.Encoding utf8 = System.Text.Encoding.UTF8;
            //key为abcdefghijklmnopqrstuvwx的Base64编码  
            byte[] key = Convert.FromBase64String("YWJjZGVmZ2hpamtsbW5vcHFyc3R1dnd5");
            byte[] iv = new byte[] { 1, 2, 3, 4, 5, 6, 7, 8 };      //当模式为ECB时，IV无用  

            byte[] str1 = Convert.FromBase64String(strA);
            byte[] str2 = Des3Utility.Des3DecodeCBC(key, iv, str1);
            string strB = (System.Text.Encoding.UTF8.GetString(str2));
            //////////////////////////////////////////////////////////////////////////////////
            return strB;
        }


        #endregion CBC

    }


    #region java

    //[java] view plaincopy
    //import java.security.Key;  
    //import javax.crypto.Cipher;  
    //import javax.crypto.SecretKeyFactory;  
    //import javax.crypto.spec.DESedeKeySpec;  
    //import javax.crypto.spec.IvParameterSpec;  
    //import sun.misc.BASE64Decoder;  
    //import sun.misc.BASE64Encoder;  
    //public class Des3 {  
    //    public static void main(String[] args) throws Exception {  
    //        byte[] key=new BASE64Decoder().decodeBuffer("YWJjZGVmZ2hpamtsbW5vcHFyc3R1dnd4");  
    //        byte[] keyiv = { 1, 2, 3, 4, 5, 6, 7, 8 };  
    //        byte[] data="中国ABCabc123".getBytes("UTF-8");  

    //        System.out.println("ECB加密解密");  
    //        byte[] str3 = des3EncodeECB(key,data );  
    //        byte[] str4 = ees3DecodeECB(key, str3);  
    //        System.out.println(new BASE64Encoder().encode(str3));  
    //        System.out.println(new String(str4, "UTF-8"));  
    //        System.out.println();  
    //        System.out.println("CBC加密解密");  
    //        byte[] str5 = des3EncodeCBC(key, keyiv, data);  
    //        byte[] str6 = des3DecodeCBC(key, keyiv, str5);  
    //        System.out.println(new BASE64Encoder().encode(str5));  
    //        System.out.println(new String(str6, "UTF-8"));  
    //    }  
    //    /**
    //     * ECB加密,不要IV
    //     * @param key 密钥
    //     * @param data 明文
    //     * @return Base64编码的密文
    //     * @throws Exception
    //     */  
    //    public static byte[] des3EncodeECB(byte[] key, byte[] data)  
    //            throws Exception {  
    //        Key deskey = null;  
    //        DESedeKeySpec spec = new DESedeKeySpec(key);  
    //        SecretKeyFactory keyfactory = SecretKeyFactory.getInstance("desede");  
    //        deskey = keyfactory.generateSecret(spec);  
    //        Cipher cipher = Cipher.getInstance("desede" + "/ECB/PKCS5Padding");  
    //        cipher.init(Cipher.ENCRYPT_MODE, deskey);  
    //        byte[] bOut = cipher.doFinal(data);  
    //        return bOut;  
    //    }  
    //    /**
    //     * ECB解密,不要IV
    //     * @param key 密钥
    //     * @param data Base64编码的密文
    //     * @return 明文
    //     * @throws Exception
    //     */  
    //    public static byte[] ees3DecodeECB(byte[] key, byte[] data)  
    //            throws Exception {  
    //        Key deskey = null;  
    //        DESedeKeySpec spec = new DESedeKeySpec(key);  
    //        SecretKeyFactory keyfactory = SecretKeyFactory.getInstance("desede");  
    //        deskey = keyfactory.generateSecret(spec);  
    //        Cipher cipher = Cipher.getInstance("desede" + "/ECB/PKCS5Padding");  
    //        cipher.init(Cipher.DECRYPT_MODE, deskey);  
    //        byte[] bOut = cipher.doFinal(data);  
    //        return bOut;  
    //    }  
    //    /**
    //     * CBC加密
    //     * @param key 密钥
    //     * @param keyiv IV
    //     * @param data 明文
    //     * @return Base64编码的密文
    //     * @throws Exception
    //     */  
    //    public static byte[] des3EncodeCBC(byte[] key, byte[] keyiv, byte[] data)  
    //            throws Exception {  
    //        Key deskey = null;  
    //        DESedeKeySpec spec = new DESedeKeySpec(key);  
    //        SecretKeyFactory keyfactory = SecretKeyFactory.getInstance("desede");  
    //        deskey = keyfactory.generateSecret(spec);  
    //        Cipher cipher = Cipher.getInstance("desede" + "/CBC/PKCS5Padding");  
    //        IvParameterSpec ips = new IvParameterSpec(keyiv);  
    //        cipher.init(Cipher.ENCRYPT_MODE, deskey, ips);  
    //        byte[] bOut = cipher.doFinal(data);  
    //        return bOut;  
    //    }  
    //    /**
    //     * CBC解密
    //     * @param key 密钥
    //     * @param keyiv IV
    //     * @param data Base64编码的密文
    //     * @return 明文
    //     * @throws Exception
    //     */  
    //    public static byte[] des3DecodeCBC(byte[] key, byte[] keyiv, byte[] data)  
    //            throws Exception {  
    //        Key deskey = null;  
    //        DESedeKeySpec spec = new DESedeKeySpec(key);  
    //        SecretKeyFactory keyfactory = SecretKeyFactory.getInstance("desede");  
    //        deskey = keyfactory.generateSecret(spec);  
    //        Cipher cipher = Cipher.getInstance("desede" + "/CBC/PKCS5Padding");  
    //        IvParameterSpec ips = new IvParameterSpec(keyiv);  
    //        cipher.init(Cipher.DECRYPT_MODE, deskey, ips);  
    //        byte[] bOut = cipher.doFinal(data);  
    //        return bOut;  
    //    }  
    //}  
    //下面是运行结果


    //ECB模式:
    //rmWB4+r9Ug93WI0KAEuMig==
    //中国ABCabc123

    //CBC模式:
    //4aabWF8UFour/vNfnzJrjw==
    //中国ABCabc123
    #endregion





}
